Educational laboratory equipment

spring-mass oscillation and on friction System to consist of: inclinable track with stoppers at both sides rolling carriage plunger carriage friction block 3 tension springs device for actuation of carriages and friction block deflection pulley 3 sets of weights cord moveable stopper for track additional weights for carriages including measuring tape: length: 2000mm, resolution: 1mm 3 buffers with rubber buffer heads for covering of permanent magnets 2 additional steel weights for carriages: 2x 400g for each; w x d x h:± 2100x130x100mm English operation instruction manual.